What characteristics define poisonous snakes?

Vipers have a “diamond” shaped head with a jaw that sticks out at an angle and is much wider than the neck. They are a type of snake that has one of the most deadly poisons. read more

Snakes of any length category may range from slender to stout. Body shape is a characteristic which should be judged from the overall impression. Snake body girths normally change smoothly from head to tail. Since snakes swallow their prey whole, their bodies may be misshapened following eating of large prey. read more

Some colorful snakes, such as the scarlet snakes, the scarlet kingsnake, and the red milk snake, are non-venomous. The black mamba, the coral snake, the cobra, and the inland taipan snake are venomous but have round pupils. read more